Exhaust-muffler.



L. W. TURNER 61 L. VAUGHAN.

EXHAUST MUFFLER.

APPLICATION FILED DEC. 26,1913.

Patented Mar. 1 1, 1916.

QQZTWWW ATTORNEY.

UNITED STATES PATENT OFFICE.

LITTLETON W. TURNER, 0F LINCOLN, AND LOUIS VAUGHAN, OF BLAIR, NEBRASKA.

EXHAUST-MUFFLER.

Application filed December 26, 1913.

To all whom it may concern:

Be it known that we, LITTLETON IV. TURNER and Louis VAUGHAN, citizens ofthe United States of America, the former residing at Lincoln, in thecounty of Lancaster, and the latter residing at Blair, in the county ofashington, and both in the State of Nebraska, have invented certain newand useful Improvements in Exhaust- Mutllers of which the following is aspecification.

Our invention relates to improvements in mufllers for the exhausts ofpower engines driven by expansive fluid; and the objects of ourimprovement are, first, to progressively and increasingly diminish thepressure of the pulsative discharge current in the exhaust duct, priorto an unobstructed final discharge at diminished pressure; second, toprovide means for adjusting the mufiier qualitatively, that is, toaccord with the intensity of the exhaust; and, third, to provide meansfor quantitative adjustment: to accord with the size of the engine, itsconnected exhaust duct and the volume of the exhaust.

These and other constructional objects hereinafter more particularly setforth, we attain by the structure illustrated in the accompanyingdrawings in which-' Figure 1 is a perspective view of a com pletemuflier as arranged to mufile an exhaust of medium or ordinary intensityand volume; Fig. 2, a fragmental top View of the discharging end and itssupporting yoke-hanger; Fig. 3, a fragmental longitudinal section on thedotted line 3 of Fig. l; Fig. 4, a cross-sectional view on the brokenline 4 of Fig. 5; and Fig. 5, a-frag mental side elevation of such amufiler construction modified and enlarged for an exhaust of greatervolume. V

. In all of which views like parts are designated by the same referencenumerals.

An exhaust of greater volume, logically requires a larger exhaust duct.And in a large pipe the proportion of area of crosssection or capacityto its circumferential measurement or wall sunerficies, is greater thanin a smaller pipe. This is a fact pertinent to the adjustment featuresof a wideopen muflier of the character herein set forth, and is takeninto consideration in our solution of the mufiler adjustment problem.

The exhaust pipe 5 has its walls at opposite sides slitted backwardlyfrom its dis- Specification of Letters Patent.

Patented Mar. 1st, 1916.

Serial No. 808,812.

charging end to split the pipe axially and form the opposed integralelastic halves or tongues 6 and T. This slitting,preferably done with avery thin cutter, forming narrow slots through the wall of the pipe,will complete the mutller in cases of very small pipes, if sufficientlength of pipe is available to make the slots as long as required, andthe wall of the pipe is thick enough to resist the tendency to bend andset the tongues outwardly or to noisily vibrate them. In most cases,especially for a light exhaust with limited length of slot, an advantageis attained by supporting the tongues bent outwardly, to widen the slotsin a small degree, toward the discharging end, as shown in Fig. 1. Tofacilitate adjusting the bend of the tongues to increase or decrease thewidening of the slots, in accordance with the exhaust requirements, anadjustable yoke hanger is constructed as follows: A single piece of wireis bent intermediately to form the coils 8 and 9, single about theoutside of the half or tongue 6, and double about the outside of theopposite tongue 7. The end portions 10 and 10 of the wire are extendedparallel with each other from the slots at opposite sides of thetongues, by and beyond the tongue 6, and have their ends bent to formthe terminal eyes 11 and 11 to receive the attaching screws 12. Thecoils are spaced apart at the bases of the straight hanger portions 10,and a bolt 13 is inserted across between the coils and through the slotsacross the ex haust duct. The coiled part of the wire forms an elasticyoke around the tongues, to yieldingly bind them against the insertedbolt. By changing the position of the yoke, toward or from thedischarging end of the duct, the inclination of the tonguehalves to eachother is changed to modify the taper of the intervening slots; forgreater changes bolts of different diameters are substituted for thebolt 13, to fit which, the elastic yoke expands or contracts. To fastenthe whole at any point of desired adjustment, the nut 14 is turned home,it and the bolt head 1 clamping the coiled wire firmly against theadjacent edges of the tongues.

For an exhaust of greater volume, a larger pipe is slitted into threeequal longitudinal tongues 16, 16 and 16, as shown in Figs. l and 5.These tongues are shown supported by a modified yoke and hangerconsisting of an integral cast metal ring 25 disposed around the tonguesand having the perforated lugs or cars 17 to receive the screws 18threaded in the tongues to fasten them against the inside of the yoke.Athwart the slots between the tongues, the yoke has the outward bends 19having the chamfers 20 on their forward sides, so that the escape of theexpanding fluid throughthe intervening slots 21 will not be obstructedby the yoke. An extension 22 on the yoke-ring has the perforated cars23, to receive the supporting bolts 24.

It is obvious that the discharging end of an exhaust'pipe may be variedas to size and slitted into any number of tongues, forming a like numberof slots opening out cndwise with said discharging end, in accordancewith and as required by the volume or quality of the exhaust to bemuffled.

We claim:

1. An exhaust muffler, comprising an ex haust pipe splitlongitudinallyat its discharging end, a wire hanger and yoke coiled around the splitportion of said pipe, a bolt disposed through the split in the pipe andbetween the coils of the yoke-hanger at opposite sides of said pipe, andattaching eyes formed of bent portions of said wire.

2. An exhaust muffler, comprising a split exhaust pipe, a yokeconsisting of wire coiled around the split pipe, and a bolt disposedacross through the split of the pipe and between the coils of the wireat opposite sides thereof. I

3. An exhaust muffler, comprising an exhaust pipe having a portion ofits discharging end split to form integral opposed elastic halves, anelastic supporting yoke disposed around the halves, and suitable meansto retain the halves bent away from each other against their'resiliencyand the resiliency of said yoke.

l. An exhaust muffler, comprising the discharging end of an exhaust pipeslitted to form integral elastic tongues, an adjustable supporting yokedisposed about said tongues, and suitable means to retain the tonguesbent outwardly againstsaid yoke.

An exhaust muffler, comprising the dis charging end ofan exhaust pipeslitted to form integral elastic tongues normally standing in the planeof its wall. V

6. An exhaust muflier, comprising the open discharging end of an exhaustpipe, elastic tongues disposed to form a continuation of Copies of thispatent'may be obtained for the exhaust duct at said discharging end,

and suitable means connected to supportthe ends of said tongues spacedapart.

8. Anexhaust muffler, comprising an exhaust pipe having a portion at itsdischarging end slitted into indetached sections, and a yoke attached tosupport said sections.

9. An exhaust muffler, comprising longitudinally-extendedcircumferentially-spaced tongues disposed on the discharging end of anexhaust pipe in the plane of its wall.

10. An exhaust muffler comprising an ex haust pipe having itsdischarging end slitted into longitudinally extendedcircumferentially-spaced tongues.

11. An exhaust muffler, comprising a lengthwise portion of thedischarging end of an exhaust pipe split into longitudinal indetachedsections.

12. An exhaust muffler, comprising the open discharging end of anexhaust pipe slitted to form integral tongues thereon.

13. An exhaust muffler, comprising a plurality of tongues based on andspaced around on the open discharging end of an exhaust pipe.

at. A11 exhaust muffier, comprising an exhaust pipe having a pluralityof longitudinal 'circumferentially-spaced open-ended slots extendingthrough and backwardly into the wall of its open discharging end.

15. An exhaust muffler, comprising an open discharging end portion of anexhaust pipe having aplurality of circumferentiallyspaced slots extendedthrough and backwardly into its wall from said open discharging end.

16. An exhaust muffler, comprising an exhaust pipe having a plurality ofslots through its walls and each slot open at one end with the opendischarging end of said exhaust pipe. 2

V In testimony whereof we have aliixed our signatures in presence of twowitnesses.

LITTLETON W. TURNER. LOUIS VAUGHAN.

l Vitnesses':

i B. F. HALLER,

L. C. CHAMBERS.

five cents each, by, addressing the Gommissioner of lat'ents,Washington, D. C.

